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It's right for you if...
You want the fastest fitness bike you can get—one that can hold its own with any road bike out there. You want to keep up with faster group rides, put on more miles, set new Strava PRs, and leave a pack of roadies in your dust as you sprint to the town line.
The tech you get
A lightweight 400 Series OCLV Carbon frame with a road-smoothing IsoSpeed decoupler, a carbon fork, a 2x11 Shimano 105 road drivetrain with a wide range of gearing, hydraulic disc brakes, hidden fender mounts, a lightweight Bontrager alloy wheelset with thru-axles for better responsiveness and control, and a vibration-absorbing handlebar with ergonomic grips.
The final word
The fastest fitness bike. Period. A lightweight OCLV Carbon frame with IsoSpeed, a carbon fork, and a high-performance Shimano 105 drivetrain make FX Sport 6 the ideal ride for anyone who wants to ride ridiculously fast and crush fitness milestones.
The Walkthrough
favorite_borderWhy you'll love it
- A fitness bike that's every bit as fast and capable as the race bikes found in our road lineup
- You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S
- The cables are routed internally, which protects them from the elements and adds to the bike's sleek look
- It's easy to accessorize with fenders, lights, and more!
- Like every Trek hybrid, it's backed by a lifetime warranty and supported by a wide network of retail partners
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Features
Hidden fender mounts
Discreet mounts accommodate full-coverage fenders for added utility.
Tubeless Ready rims
Bontrager TLR (Tubeless Ready) Road is the first fully integrated tubeless system for road wheels. When you go tubeless with TLR, you can run lower tire pressure for increased traction and comfort without the threat of pinch flats.
Puncture-resistant tires
Tough Bontrager Hard-Case tires help keep flats from slowing you down.
DuoTrap S compatible
DuoTrap S (sold separately) integrates a Bluetooth®/ANT+ sensor into the frame. Log routes and track fitness progress on your computer or smart phone with no external sensor. Works with all major ANT+ wireless players, including Bontrager, Garmin, PowerTap, and SRM.
Blendr stem
Bontrager stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.
Learn more
IsoZone handlebar and grips
Suspension for your hands. Our exclusive vibration-damping IsoZone material absorbs road bumps and buzz, giving you more control and an incredibly comfortable ride.
Hydraulic disc brakes
Hydraulic disc brakes offer the absolute strongest stopping power in all conditions, including wet and muddy.
IsoSpeed decoupler
At the core of Trek's endurance comfort technology is the IsoSpeed decoupler, the result of an 18-month study of how a racing bike performs over rough roads, and how that performance affects the rider.
Learn more
400 Series OCLV
Ultra high performance, within reach. The areal weight range and modulus mix of 400 Series OCLV provides an exhilarating sense of acceleration and confident handling.
Learn more
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | 400 series OCLV carbon, IsoSpeed, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 142x12mm thru axle |
|---|---|
| *Fork |
Size:
S, M, L, XL FX Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc, 405mm axle-to-crown, 100x12mm thru axle |
|
Size:
S, M, L, XL FX Carbon, flat mount disc, hidden fender mounts, 405mm axle-to-crown, 100x12mm thru axle |
| Front hub | Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle |
|---|---|
| Rear hub | Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle |
| Rim | Bontrager Affinity Disc, Tubeless Ready, 28-hole, presta valve |
| *Spokes |
Size:
S, M, L, XL 14g stainless steel |
|
Size:
S, M, L, XL 14g, stainless steel, black |
|
| Tire | Bontrager R2 Hard-Case Lite, aramid bead, 60 tpi, 700x32c |
| Shifter | Shimano RS700, 11 speed |
|---|---|
| Front derailleur | Shimano 105 R7000, braze-on |
| Rear derailleur | Shimano 105 R7000, long cage, 34T max cog |
| *Crank |
Size:
S Shimano 105 R7000, 50/34 (compact), 170mm length |
|
Size:
M, L Shimano 105 R7000, 50/34 (compact), 172.5mm length |
|
|
Size:
XL Shimano 105 R7000, 50/34 (compact), 175mm length |
|
| Bottom bracket | Shimano BB71, 86.5mm, PressFit |
| Cassette | Shimano 105 R7000, 11-32, 11 speed |
| Chain | Shimano HG601 |
| Pedal | VP Resin body, alloy cage, toe clip |
| Saddle | Bontrager Montrose Comp, steel rails, 138mm width |
|---|---|
| Seatpost | Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length |
| *Handlebar |
Size:
S, M Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width |
|
Size:
L, XL Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width |
|
| Grips | Bontrager Satellite IsoZone Plus, lock-on, ergonomic |
| *Stem |
Size:
S, M Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 100mm length |
|
Size:
L, XL Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 110mm length |
|
| Headset | FSA Integrated, sealed cartridge bearing, 1-1/8'' |
| Brake | Tektro HD-R310, hydraulic disc, 160mm rotor |
| Brake rotor | Shimano RT10, 160mm, centerlock |
| Weight | M - 9.30 kg / 20.5 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.
Rider Height
Inseam
XS
147.0 - 155.0 cm
4'9.9" - 5'1.0"
69.0 - 73.0 cm
27.2" - 28.7"
S
155.0 - 165.0 cm
5'1.0" - 5'5.0"
72.0 - 78.0 cm
28.3" - 30.7"
M
165.0 - 175.0 cm
5'5.0" - 5'8.9"
77.0 - 83.0 cm
30.3" - 32.7"
L
175.0 - 186.0 cm
5'8.9" - 6'1.2"
82.0 - 88.0 cm
32.3" - 34.6"
XL
186.0 - 197.0 cm
6'1.2" - 6'5.6"
87.0 - 93.0 cm
34.3" - 36.6"
All measurements provided in cm unless otherwise noted.
| Frame size letter | Wheel size | A — Seat tube | B — Seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XS | 700c | 35.6 | 75.0° | 11.0 | 70.0° | 53.1 | 28.5 | 6.5 | 43.8 | 5.0 | 7.4 | 104.5 | 68.4 | 38.8 | 53.3 |
| S | 700c | 40.6 | 74.5° | 13.5 | 70.5° | 55.0 | 28.5 | 6.5 | 43.8 | 5.0 | 7.1 | 105.6 | 71.2 | 39.5 | 55.8 |
| M | 700c | 45.7 | 74.0° | 16.0 | 71.0° | 57.0 | 28.5 | 6.5 | 43.8 | 5.0 | 7.0 | 106.7 | 74.3 | 40.3 | 58.4 |
| L | 700c | 50.8 | 73.5° | 18.5 | 71.5° | 59.0 | 28.5 | 6.5 | 43.8 | 4.5 | 6.7 | 107.2 | 78.1 | 40.9 | 61.1 |
| XL | 700c | 55.9 | 72.5° | 21.0 | 72.5° | 62.0 | 28.5 | 6.5 | 43.8 | 4.5 | 6.3 | 108.0 | 81.8 | 41.9 | 64.0 |